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Finding the Fourth Proportional to 318,999.96, 440,217.78 and 175,756.68

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Solution

The fourth proportional to 318,999.96, 440,217.78 and 175,756.68 is: 242,543.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,999.96 : 440,217.78 = 175,756.68 : x
  2. Step 2: Convert to fraction form
    318,999.96/440,217.78 = 175,756.68/x
  3. Step 3: Cross multiply
    318,999.96x = 440,217.78 × 175,756.68
  4. Step 4: Simplify right side
    318,999.96x = 77,371,215,489.77
  5. Step 5: Solve for x
    x = 77,371,215,489.77/318,999.96
  6. Step 6: Final answer
    x = 242,543.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.